|State|Interview|Swimsuit|Evening Gown|Average|
|---|---|---|---|---|
|Idaho|8.688|8.925|8.850|8.821|
|Kentucky|8.863|9.175|9.400|9.146|
|Vermont|8.425|9.013|9.300|8.913|
|Texas|8.688|8.975|8.875|8.846|
|North Dakota|8.800|8.975|9.175|8.983|
|Washington|8.688|8.788|8.863|8.779|
|Alabama|8.650|8.475|8.938|8.688|
|South Dakota|8.300|8.838|8.513|8.550|
|New York|8.463|8.713|8.400|8.525|
|Oklahoma|8.275|8.325|8.700|8.433|

Question: how many state has an average under 8.5?
Answer: 1